%I #8 Jan 20 2024 17:44:44

%S 0,0,1,1,3,3,4,4,6,6,7,7,8,8,9,8,10,10,11,11,12,11,12,12,13,13,14,14,

%T 15,15,16,16,18,17,18,17,18,18,19,18,19,19,20,20,21,20,21,21,22,22,23,

%U 22,23,23,24,23,24,23,24,24,25,25,26,25,27,26,27,27,28,27,28,28,29,29,30

%N a(n) = sum of the exponents in the prime factorization of LCM{1, n-1, ..., C(n-[ n/2 ],[ n/2 ])}.

%F a(n) = A001222(A025560(n)). - _Sean A. Irvine_, Sep 06 2019

%Y Cf. A001222, A025560.

%K nonn

%O 1,5

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Sep 06 2019